JP5815172B2 - Insoles or insoles for footwear and walking footwear or sneakers using the same - Google Patents

Description

  The present invention relates to an insole or insole for footwear that can smoothly move the center of gravity during walking, is less fatigued, and can perform stable walking, and a sneaker using the same.

  Since a person walks with two legs, it is necessary to support the weight with the entire soles of the two legs and to balance the whole body during walking. For this purpose, the human foot has a complex skeletal structure consisting of the buttocks, five fingers and the metatarsal bone, wedge bone, cubic bone, scaphoid bone, talus, etc. that connect them, and these are organically linked. It consists of muscular tissues that allow the two-legged walking to balance the body while working in a complex manner. Among such foot structures, in particular, the lateral longitudinal (width direction) arch structure of the sole formed by the inner longitudinal arch structure of the arch inside the soles of the left and right legs and the five metatarsals However, it plays an important role in supporting weight and reducing the impact of walking.

  Footwear plays an important role for such people walking on two legs. Various conventional footwear has been used such as shoes, clogs, sandals, slippers, etc., but these are generally flat and flat where the human sole touches. there were.

  In recent years, various ingenuity has been made to make walking easier and more stable during walking, and even less fatigued footwear, especially supporting the arch structure of the sole inside the sole where the sole touches Therefore, a shoe sole and an insole (insole) in which various raised portions are formed have been proposed.

  For example, in order to further improve the shock absorption capacity of the foot arch, the soles of the foot arches having the shock absorption capacity of the soles are made higher or harder than the other parts (see Patent Document 1), As a footwear or shoe insole for the prevention of hallux valgus that enhances the prevention and correction effect, the insole surface is provided with a recess for stabilizing the thumb, a recess for stabilizing the heel, a arch support projection, and a metatarsal support projection (patent) Document 2) has been proposed. However, the former has a flat contact shape and is only partially raised or hard, and a satisfactory wearing feeling cannot be obtained, and the latter has not necessarily clearly demonstrated effects such as prevention of hallux valgus. .

  As a further improvement to these, for example, for the purpose of nurturing a natural foot shape by normally forming the user's original foot shape, or making the walking of elderly people more stable, An insole for footwear or a shoe sole in which a raised portion or a support portion is provided so as to be in contact with each arch portion or heel portion according to the shape of the sole has been proposed (see Patent Literature 3 and Patent Literature 4). . In addition, it is intended to be worn by an insole aimed at stabilizing each part of the wearer's foot skeleton in a well-balanced manner and obtaining a good feeling of use, or a patient with or prone to O-legs or knee osteoarthritis. As an object, an insole made of a flexible material in which each arch portion or the like is provided with a raised portion or a spot-like concave portion has been proposed (see Patent Documents 5 and 6).

JP-A-9-28409 Japanese Patent Laid-Open No. 9-14405 Japanese Patent No. 3784680 Japanese Patent No. 38744982 JP 2010-275 A JP 2010-115921 A

However, the insole and insole of shoes with various raised portions formed on the surface as proposed in the past do not necessarily satisfy the sung effect, and the structure becomes complicated. It was expensive.
An object of the present invention is to provide footwear or sneakers that support the stepped part of the foot firmly, can walk smoothly, are not fatigued, and are optimal for long-time walking or standing work. is there.

  As a result of intensive studies in view of the above situation in footwear and sneakers for walking, the present inventors have found various ridges on the inner bottom of the walking footwear and sneakers or on the surface of the insole to induce walking. The footwear or sneakers are structured by combining the insole or insole with a sole or outsole having a structure that induces walking in the same manner by providing a hollow part. Thus, the present invention has been completed.

That is, the present invention has the following contents.
(1) It is made of an elastic material having a flat plate shape and cushioning properties, and the following concave portions (A) and raised portions (B) to (F) are formed on the upper surface of the main body corresponding to the soles. Feature walking footwear or sneaker insole or insole.
(A) a hemispherical mother-child sphere recess having a vertically long elliptical shape at the position of the first and second mother-child spheres;
(B) a crest-like central raised portion that protrudes linearly from the distal end of the second heel metatarsal so as to contact the center of the fifth heel metatarsal;
(C) Located on the arch of the sole, raised so as to contact the wedge-shaped bone, the scaphoid bone, the first posterior part of the first metatarsal bone and the second posterior part of the metatarsal bone, and the outer edge of the arch projecting inwardly An inner fan-shaped ridge having a shape,
(D) an outer fan-shaped raised portion having a shape protruding so as to abut on the front portion of the cubic bone and the rib, and projecting outward in the foot direction;
(E) a ring-shaped raised portion having a shape raised in a ring shape so that its inner diameter abuts on the rib, and
(F) A semi-elliptical arc-shaped posterior raised portion having a shape protruding from the outer edge of the rib so as to contact the outer edge of the fifth metatarsal posterior portion and projecting outward in the foot direction.

(2) The footwear or the footwear according to (1) above, wherein the inner fan-shaped bulging portion further protrudes from the insole or the base portion of the insole toward the inside of the foot and forms a space below the foot. Sneaker insole or insole.

(3) The footwear according to (1) or (2) above, wherein the cushioning elastic material has an indentation hardness of 10 to 80 by durometer type E measured from the back side of the flat plate-like material. Sneaker insole or insole.

(4) Any one of the above (1) to (3), wherein the cushioning elastic material is a synthetic resin foam selected from vinyl chloride resin, polyethylene resin, ethylene vinyl acetate resin and urethane resin An insole or insole for footwear or sneakers according to

(5) The insole or insole of footwear or sneakers according to any one of (1) to (4), wherein the insole or insole is integrally formed with a single constituent material. .

(6) The footwear or sneaker insole or insole according to any one of (1) to (5) above, and the upper surface thereof is an inverted triangle or inverted trapezoid whose cross-sectional shape is downward in the foot width direction. On the lower surface that has grooves and touches the ground, a plurality of circular or elliptical grooves are formed at positions corresponding to the mother and child spheres and buttocks, and the other parts are convex in the toe direction. Footwear or sneakers for walking constructed by combining a shoe sole or outsole formed with a plurality of arc-shaped grooves.

(7) The groove according to (6) above, wherein the groove having an inverted triangle or inverted trapezoidal cross-sectional shape is linear and is formed in a portion from the rear portion of the radius to the metatarsal head. Walking footwear or sneakers.

(8) Grooves whose cross-sectional shape is an inverted triangle or inverted trapezoid are formed so that the interval is 10 to 20 mm and the depth at the heel portion is 6.5 to 7.5 mm and decreases toward the toe direction. The walking footwear or sneakers according to (6) or (7) above, wherein

(9) A plurality of arc-shaped grooves that are convex in the toe direction of the foot are formed to protrude forward in the direction along the movement path of the center of gravity during walking from the rear end of the heel to the tip of the toe. The walking footwear or sneakers according to any one of (6) to (8) above.

(10) The plurality of arc-shaped grooves have a width of 0.8 to 10 mm, a depth of 0.5 to 2.5 mm, and a groove interval of 0.9 to 12 mm. (6) The footwear or sneakers for walking according to any one of (9).

  The insole or insole of walking footwear or sneakers of the present invention has moderate elasticity when used by a person, and has a plurality of raised portions and recessed portions formed on the surface thereof. In use, it closely fits the sole of the foot, and can firmly support the arch of the foot arch and the lateral arch of the second heel metatarsal to the fifth heel metatarsal. Therefore, it is comfortable to wear with a perfect feel, and the effect that it is hard to get tired even if used for a long time is obtained.

  Furthermore, the walking footwear or sneakers of the present invention are configured integrally by combining such an insole or insole with a shoe sole or outsole in which characteristic grooves are formed on the upper and lower surfaces, respectively. By adopting a structure that combines such a characteristic insole or insole with a shoe sole or outsole, it is naturally guided to a sidewalk that is considered to be an ideal gait when walking, and more This makes it possible to walk more stably with less fatigue, and provides comfortable footwear or sneakers.

It is an example of the top view and side view which show the insole or insole of this invention. It is sectional drawing of AA 'arrow of the insole or insole of this invention of FIG. It is sectional drawing of BB 'arrow and CC' arrow of the insole or insole of this invention of FIG. It is an example of the upper side top view of the sole or outsole of the footwear or sneakers for walking of this invention. It is an example of the lower side top view of the shoe sole or outsole of the footwear or sneakers for walking of this invention. It is sectional drawing of DD 'arrow of the shoe sole or outsole of the footwear or sneaker for walking of this invention of FIG. It is explanatory drawing which shows the skeleton of a person's foot. It is explanatory drawing which shows a tilt walk. 6 is a graph showing the result of evaluation of the comfort level based on the subjective evaluation of Example 1. 4 is a graph showing the evaluation results of foot fatigue by subjective evaluation of Example 1. 4 is a graph showing an evaluation result of impact at landing by subjective evaluation of Example 1. 6 is a graph showing evaluation results of foot wobble by subjective evaluation in Example 1; It is a graph which shows the evaluation result of the fit of an insole and a sole by the subjective evaluation of Example 1. 4 is a graph showing an evaluation result of the bending state of a shoe sole according to subjective evaluation of Example 1. It is a chart which shows the measurement result of the gravity center movement at the time of the boy student of Example 3 walking. It is a chart which shows the measurement result of the gravity center movement at the time of the walk of the female student of Example 3.

Hereinafter, the present invention will be described in more detail with reference to the drawings.
First, the insole 11 of the footwear or sneaker for walking of the present invention has a concave portion as described above (b) and various raised portions as shown in (b) to (f) on the upper surface where the sole touches. It is made of an elastic material having a cushioning property. One example is shown in FIGS. A skeleton diagram for explaining the skeleton of the foot is shown in FIG. 7, and an explanatory diagram for explaining the tilt walking is shown in FIG.

  First, the insole 11 of the walking footwear or sneaker of the present invention has a hemispherical mother-inner sphere recess 12 having an elliptical shape that is vertically long in the toe direction of the foot at a position corresponding to the mother-child sphere of the first heel (thumb). Is forming. This is in a position to receive the seed bone 43 below the head of the metatarsal bone 38 of the first heel (thumb), and the mother-child ball of the first heel when kicking the foot forward during walking by the mother-child sphere recess 12. You can grab and firmly walk. Therefore, the size and depth are selected according to the soles of the users, but generally the major axis is 30 to 44 mm, the minor axis is 23 to 32 mm, and the depth is 2.5 to 3.5 mm. The center of the recess is the maximum depth.

  Starting from the outer edge of the mother-inner sphere recess 12, the lobster-shaped central raised portion 13 bulges linearly from the distal end portion of the second heel metatarsal 39 to a position in contact with the center portion of the fifth heel metatarsal 42. Is forming. This functions to support the arch (lateral arch) in the width direction of the foot formed by the second heel metatarsal 39 to the fifth heel metatarsal 42 from below. In addition, the center of gravity that has moved from the rear is guided in the direction of the mother-child sphere concave portion 12 by the paddle-shaped central raised portion 13 during walking. The crest-like central raised portion 13 has a width of 6.5 to 9.5 mm and a height of 0.8 to 1.2 mm.

  In addition, in the position corresponding to the arch of the sole, it protrudes so as to contact the wedge-shaped bone, the scaphoid bone, the first posterior part of the first metatarsal bone and the posterior part of the second metatarsal bone, and the outer edge protrudes inward of the foot. It has an inner fan-shaped ridge 14 having a shape. More specifically, the inner fan-shaped ridge 14 starts from the outer wedge-shaped bone 37, protrudes from the base of the insole or the insole, and further protrudes while continuously protruding toward the inner side of the foot. It touches the scaphoid bone, the 1st metatarsal posterior part and the 2nd metatarsal posterior part, the position of the maximum height is at the outermost edge of the inside of the foot, and a space is formed in the lower part, It has a shape that protrudes in the direction.

  The medial fan-shaped raised portion 14 abuts the wedge-shaped bones 35 to 37, the scaphoid bone 33, the first metatarsal posterior portion 38, and the second metatarsal posterior portion 39, thereby performing the most important function during walking. It works to firmly support the arch (vertical arch) from below. As shown in FIG. 5, the inner fan-shaped protruding portion 14 has a shape that protrudes inward of the foot, and forms a space below it. With such a structure, it is possible to more reliably support the arch portion of the sole that deforms greatly during walking. The decrease in the arch of the arch due to walking is one of the causes of fatigue, but the inner fan-shaped ridge 14 can prevent the arch from decreasing.

  The outer fan-shaped ridge 15 starts from the inside of the cube bone 34 and extends while continuously protruding toward the outside of the foot, and protrudes so as to contact the front of the cube bone 34 and the rib 32, It has a shape projecting outward. This outer fan-shaped ridge 15 suppresses the excessive rotation of the ankle to the outside caused by the inner fan-shaped ridge 14 of the arch (referred to as “prolapse”), and brings about the optimal movement of the center of gravity and stable walking. Can do.

  The ring-shaped ridge 16 is a ring-shaped (donut-shaped) bulge provided at a position corresponding to the heel of the foot, and the inner diameter of the ring is the center of the rib 32 inside the rib 32. A ridge is formed in a donut shape so as to be in contact with both outer ends. This, combined with the semi-elliptical arc-shaped rear ridge 17 described below, stabilizes the landing from the heel by gripping the heel firmly during walking.

  The semi-elliptical arc-shaped rear bulge portion 17 is a bulge formed by extending from the base portion of the insole or the insole so as to abut against the outer edge of the fifth metatarsal bone 42 from the outer edge of the rib 32 and slightly projecting outward. Yes, it collaborates with the annular ridge 16 to grip the heel during walking and stabilize landing from the heel.

  The insole or insole of the present invention is generally flat and made of an elastic material having a cushioning property. Here, the elastic material having a cushioning property may be any material as long as it is deformed slightly when a person rides and the user feels elasticity. Specifically, for example, the indentation hardness by durometer type E measured from the back side of the flat plate material is preferably in the range of 10 to 80, and more preferably in the range of 30 to 60. The indentation hardness by durometer type E is defined in ISO7619. If the indentation hardness is too small, deformation of the raised portion and the concave portion due to the load applied during walking increases, and the above-described effects cannot be sufficiently exhibited. On the other hand, if the indentation hardness is too large, the feel and fit when worn are worsened and the impact during walking is increased.

  As such an elastic material, a synthetic resin foam is preferable for the insole or insole of the present invention. Examples of the synthetic resin foam include foams such as vinyl chloride resin, polyethylene resin, ethylene vinyl acetate resin, and urethane resin.

  Moreover, it is preferable that the insole or insole of the present invention is integrally molded at the same time by a method such as pressure heating molding using a flat elastic material. In this way, it is preferable to make the shape having various raised portions and concave portions as described above by simultaneous integral molding because the manufacturing cost can be reduced.

  Further, the present invention has an insole or insole 11 having various ridges and recesses characteristic to the surface as described above, and an inverted triangle or inverted shape in which the cross-sectional shape is downward in the foot width direction on the upper surface. On the lower surface that has a trapezoidal groove and is in contact with the ground, a plurality of circular or elliptical grooves are formed in the part corresponding to the mother-child sphere part and the heel part, and the other part is in the toe direction of the foot It is the footwear or sneakers for walking comprised combining the sole or the outsole 21 which forms several convex circular arc-shaped groove | channels. An example of such a walking footwear or sneaker sole or outsole 21 is shown in FIGS.

  First, the shoe sole or outsole 21 is provided with a number of substantially straight grooves 22 in the foot width direction (lateral direction) on the upper surface on which a person's foot rides, for example, as shown in FIGS. . The groove 22 has a cross-sectional shape that is an inverted triangle or inverted trapezoid with the top portion 23 facing downward, the depth being the largest at the heel portion, and the depth decreasing toward the toe direction. . The interval between the grooves 22 is 10 to 20 mm, preferably 13 to 18 mm, and the depth at the heel portion is 6.5 to 7.5 mm, preferably 7.0 mm. The groove 22 may be provided on the entire upper surface of the shoe sole or the outsole, but is preferably provided on about 2/3 of the entire foot corresponding to the head of the metatarsal bone.

  Further, as shown in FIGS. 5 and 6, for example, the shoe sole or outsole 21 has a plurality of circular or oval shapes on the lower surface in contact with the ground at portions corresponding to the mother and child ball portions and the heel portion of the foot. Grooves 24 and 25 are formed, and other portions are formed with a number of crescent-shaped arc-shaped grooves 26 that are convex in the toe direction of the foot. These grooves have a width of 0.8 to 10 mm, preferably 0.5 to 2.5 mm, and a depth of 0.5 to 2.5 mm. Further, the interval for providing the groove is preferably 0.9 to 12 mm.

  The circular or elliptical grooves 24 and 25 formed on the lower surface in contact with the ground form grooves with dimensions corresponding to the sizes of the buttocks and the mother and child spheres. You can grip the heel and thumb firmly when kicking or kicking. Further, the arc-shaped groove 26 provided in the other part is a crescent-shaped groove that is formed in a slightly slanted manner in the toe direction. By the cooperative action with the shoe sole or the upper groove of the outsole 21, it is possible to guide the foot so that an ideal tilt walking described later can be performed.

  Such a shoe sole or outsole 21 needs to be made of a material having elasticity and flexibility, and natural rubber, synthetic rubber such as butadiene rubber (BR), styrene-butadiene rubber (SBR). Further, rubbers such as diene rubbers such as acrylonitrile-butadiene rubber (NBR), and various synthetic resins such as polyurethane and polyvinyl chloride can be used.

  The walking footwear or sneaker of the present invention has a large number of lateral grooves 22 formed on its upper surface as described above, and a large number of circular and crescent-shaped grooves 24, 25, 26 formed on its lower surface. A shoe sole or outsole 21 is used, and the above-described numerous raised portions 13 to 17 and the insole 11 formed with the recesses 12 are mounted on the soles and fixed thereto to cover the instep portion of cotton or synthetic. It is footwear for walking or sneakers obtained by attaching a fiber covering member (upper part). Or the covering member which covers a foot | leg part is attached using the shoe sole or outsole 21 which formed such various groove | channels, and the insole or insole 11 which has the above-mentioned protruding part and recessed part in the state which can be removed here is attached. It may be an inserted walking footwear or sneaker.

  The footwear or sneakers for walking of the present invention as described above can stably support the arch portion of the foot when walking, and at the same time suppress the movement of the ankle excessively outward (pronunciation), and is stable and smooth. Walking is possible. Further, since the sole or outsole 21 having a characteristic shape as described above is used in combination with the above-mentioned various insole or insole 11 provided with a raised portion or a concave portion, It has the effect that the ground is reliably gripped by landing and kicking of the thumb part, and is naturally guided by walking as the center of gravity moves by walking.

  Here, the “tilting walk” refers to a walking mode in which the center of gravity movement of the sole accompanying the walking of the person is performed as shown in FIG. That is, as shown in FIG. 8, first, the stepped foot lands from the slightly outside of the heel (1), the center of gravity of the sole moves forward through the outside of the foot to the vicinity of the base of the little finger (2), It is a walking mode in which it moves from the base of the little finger inward to the vicinity of the base of the thumb (3), kicks the ground with the base of the thumb (4), and the weight is removed from the thumb (5). Such a sidewalk is said to be the ideal way of walking that is most resistant to fatigue. When the footwear or sneakers for walking according to the present invention are used, the structure of the footwear naturally induces such a sidewalk and can walk in a stable and fatigue-free state.

Example 1: Comparison by a long-time walking test As described below, a long-time walking test was performed using the sneakers of the present invention and a comparative sneaker, measurement of the state of each foot, and movement of the center of gravity during walking. Was measured, and the subject's subjectivity was compared and evaluated.
The footwear used here was a sneaker in which the upper was attached to the outsole shown in FIGS. 4 to 6 and the insole shown in FIGS. Also, as a comparative sneaker, an outsole that has no linear lateral grooves on the upper surface that has been widely used in the past and has a grid-like projection pattern on the lower surface (ground surface) and elasticity A sneaker made using an insole made of a flat synthetic resin foam having a thickness of 10 mm was used.

(B) Method of conducting walking test After having each of 10 male and female students from technical colleges become subjects and measure the state of the foot before walking, the above-described sneakers of the present invention and the comparative sneakers , And walked for a total of 1 hour in a 20-minute walk and a 5-minute break cycle for a total of 1 hour, and the foot condition after walking was measured immediately after the test. At the same time, each subject conducted a questionnaire to evaluate the comfort of each sneaker and the fatigue of the feet.

(B) Measurement of foot condition The measurement items of the foot condition were the height of the scaphoid bone, the ground contact area of the foot, and the muscle hardness of the shin of the foot, which were measured before and after walking. The height of the scaphoid was measured using a height gauge on a flat floor. When tired, the arch on the sole of the foot is lowered, so that the state of foot fatigue can be known from the measurement result of the height of the scaphoid bone. The foot contact area is determined by scanning the sole with a scanner (product name: Foot Look, manufactured by Foot Look Co., Ltd.) to determine the area of the sole that is in contact with the floor. The area was defined as the sole contact ratio. This is also an index indicating the state of deterioration of the sole arch due to fatigue. The muscle hardness of the shin part of the foot was measured using a muscle hardness meter (product name: NEUTON TDM NA1 (DX), manufactured by TRY-ALL).

(C) Measurement results Table 1 to Table 3 below show the amount of change in values measured for these items before and after the walking test.

  As can be seen from Table 1, when comparing the height of the scaphoid before and after the gait test, the comparison product did not change before and after walking, whereas the product of the present invention was slightly higher. It was. Normally, walking will tend to lower the arch of the arch and lower the height of the ship's bone, but there are raised portions on the arch of the insole and various grooves on the front and back of the outsole. In the sneakers of the present invention configured by combining the formed ones, it can be said that the decrease in the height of the scaphoid bone can be suppressed, and therefore the decrease in the arch of the foot can be suppressed.

  The sole contact ratio is related to the arch of the sole, and when the arch is lowered due to fatigue, the area of contact with the floor of the sole increases. As shown in Table 2, the ratio of sole contact calculated from the sole contact area relative to the total sole area is little or slightly increased in the product of the present invention, while it is considerably increased in the comparative product. It was observed. This also indicates that the product of the present invention has less deterioration in the sole arch due to walking compared to the comparative product, and is less fatigued.

  The result of Table 3 is the muscle hardness of the gastrocnemius in the lower leg. Muscles become harder due to fatigue and muscle hardness is high. When compared before and after walking, the comparison product increased after walking, i.e., the muscles became stiff, whereas the product of the present invention obtained almost the same result, and the fatigue of the gastrocnemius muscle due to walking was less than the comparison product I can say that.

(D) Results of subjective evaluation For 10 male students who conducted such walking tests, the comfort and foot fatigue, impact on landing, foot wobble, insole, etc. They asked me to evaluate the fit of the soles and the bending of the soles. The results are shown in FIGS. From these results, the sneakers of the present invention were evaluated to be less fatigued, less shocked and wobbled, and better in comfort and fit than the comparative sneakers.

Example 2 Evaluation of Impact Buffer Characteristics Using the same sneakers of the present invention as those used in Example 1 and comparative sneakers, an impact buffer characteristics test was performed as follows.
Cut the upper part of the sneakers for boys and girls from the middle foot part to the buttocks part to secure the contact part with the weight. A 10 kg weight with an acceleration sensor (CXL25GP3 MEMSIC) attached to the top is set so that the distance is 50 mm from the upper center of the heel of the sneaker body, and the weight is dropped at a collision speed of 1 m / s by free fall. The shock absorbing characteristics (G) at that time were measured. The higher the rebound acceleration at the time of collision, the stronger the rebound, and the greater the impact force applied to the person's heel. The measurement results are shown in Table 4.

  The sneakers of the present invention have a smaller impact force transmitted to the buttocks than the comparative product. This is because the sneaker itself absorbed the shock on the way. The amount of shock absorption (difference in shock buffering force) was 4.9G for boys compared to the comparative product, and the amount of shock absorption increased by 26% (= 4.9 / 18.6). Become. As a result, the shape and material of the annular ridge 16 of the insole 11 of the sneaker according to the present invention, and a large number of linear grooves 22 with a predetermined cross-sectional shape in the foot width direction on the upper surface of the outsole 21. It is obtained by the cooperative action of providing. The same result was obtained for women's use, and the amount of shock absorption was 5.7 G, an increase of 30% (= 5.7 / 19.1).

Example 3: Similar to the evaluation of the movement of the center of gravity during walking, 8 male students and 7 female students from technical colleges, a total of 15 people, became subjects, and the same sneakers and comparative products of the present invention as described above No. sneakers were worn on the right foot and the center of gravity movement during walking (trajectory of foot pressure center) was evaluated. A force plate (Kistler 9286B, manufactured by KISTLER) was used as an evaluation device, and each sneaker was worn and walked on the force plate, and the right foot was randomly extracted.

FIG. 15 and FIG. 16 show an example of a measurement chart of the foot pressure center trajectory indicating the movement of the center of gravity at the time of walking obtained for the male student and the female student as the measurement result.
As can be seen from FIG. 15 and FIG. 16, in the case of the comparative sneaker, the locus of the foot pressure center moves close to a straight line, and almost no gait is seen, whereas the sneaker of the present invention. In this case, the pedestrian's center of gravity moves from the measurement chart of the foot pressure center trajectory in the same pattern as the tilted walk shown in FIG.

  INDUSTRIAL APPLICABILITY The present invention is a footwear or sneaker for walking that can stably walk with less fatigue, and has industrial applicability in that it can provide footwear that exhibits such excellent effects to many consumers.

11. Insole or insole 12. Mother-child ball recess 13. Central protuberance 14. Inner fan-like ridge 15. Outer fan-like ridge 16. Annular ridge 17. Semi-elliptical arc-shaped rear ridge 21. Shoe sole or outsole 22. Groove 23. Top 24. Circular or elliptical groove 25. Circular or elliptical groove 26. Arc-shaped groove

31. Talus, 32. Ribs, 33. Scaphoid, 34. Cube, 35. Inner cuneiform bone,
36. Intermediate cuneiform bone, 37. Outer cuneiform bone, 38. First metatarsal bone, 39. The second metatarsal,
40. Third metatarsal bone, 41. 4th metatarsal; 5th metatarsal bone, 43. Seed bone,
44. Proximal phalanx, 45. Middle phalanx, 46. The distal phalanx,

Claims (5)

It is made of an elastic material having a flat plate shape and cushioning properties. On the upper surface of the main body corresponding to the sole, the following (a) concave portion and (b) to (f) raised portion,
(A) a hemispherical mother-child sphere recess having a vertically long elliptical shape at the position of the first and second mother sphere
(B) a crest-like central raised portion that protrudes linearly from the distal end of the second heel metatarsal so as to contact the center of the fifth heel metatarsal;
(C) Located on the arch of the sole, raised so as to contact the wedge-shaped bone, the scaphoid bone, the first posterior part of the first metatarsal bone and the second posterior part of the metatarsal bone, and the outer edge of the arch projecting inwardly An inner fan-shaped ridge having a shape,
(D) an outer fan-shaped raised portion having a shape protruding so as to abut on the front portion of the cubic bone and the rib, and projecting outward in the foot direction;
(E) a ring-shaped raised portion having a shape raised in a ring shape so that its inner diameter abuts on the rib, and
(F) a semi-elliptical arc-shaped rear raised portion having a shape protruding from the outer edge of the rib so as to contact the outer outer edge of the fifth metatarsal bone and projecting in the outer direction of the foot ;
With the insole or insole of footwear or sneakers forming
The upper surface has a groove whose cross-sectional shape in the foot width direction is an inverted triangle or inverted trapezoid whose top is downward, and a circular shape at a position corresponding to the mother-child ball portion and the heel portion on the lower surface in contact with the ground. Using a shoe sole or outsole formed with a plurality of elliptical grooves, and forming a plurality of arc-shaped grooves convex in the toe direction of the foot at other portions,
Footwear or sneakers for walking characterized by combining these.   The walking footwear according to claim 1, wherein the groove having a cross-sectional shape of an inverted triangle or an inverted trapezoid is linear and formed in a portion from the rear portion of the rib to the metatarsal head. Or sneakers.   Grooves whose cross-sectional shape is an inverted triangle or inverted trapezoid are formed so that the interval is 10 to 20 mm and the depth at the heel portion is 6.5 to 7.5 mm and decreases in the toe direction. The footwear or sneaker for walking according to claim 1 or 2, wherein the footwear or sneaker is for walking.   A plurality of arc-shaped grooves that are convex in the toe direction of the foot are formed to protrude forward in a direction along the movement locus of the center of gravity during walking from the rear end of the heel to the tip of the toe. The footwear or sneakers for walking according to any one of claims 1 to 3. The arcuate grooves have a width of 0.8 to 10 mm, a depth of 0.5 to 2.5 mm, and a groove interval of 0.9 to 12 mm. 5. Footwear or sneakers for walking according to any one of 4.

Images